Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/ma....th/linear-algebra/ma

The determinant of an upper triangular matrix

Watch the next lesson: https://www.khanacademy.org/math/linear-algebra/matrix_transformations/determinant_depth/v/linear-algebra-simpler-4x4-determinant?utm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra

Missed the previous lesson?
https://www.khanacademy.org/math/linear-algebra/matrix_transformations/determinant_depth/v/linear-algebra-determinant-after-row-operations?utm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra

Linear Algebra on Khan Academy: Have you ever wondered what the difference is between speed and velocity? Ever try to visualize in four dimensions or six or seven? Linear algebra describes things in two dimensions, but many of the concepts can be extended into three, four or more. Linear algebra implies two dimensional reasoning, however, the concepts covered in linear algebra provide the basis for multi-dimensional representations of mathematical reasoning. Matrices, vectors, vector spaces, transformations, eigenvectors/values all help us to visualize and understand multi dimensional concepts. This is an advanced course normally taken by science or engineering majors after taking at least two semesters of calculus (although calculus really isn't a prereq) so don't confuse this with regular high school algebra.

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.

For free. For everyone. Forever. #YouCanLearnAnything

Subscribe to KhanAcademy’s Linear Algebra channel:: https://www.youtube.com/channe....l/UCGYSKl6e3HM0PP7QR
Subscribe to KhanAcademy: https://www.youtube.com/subscr....iption_center?add_us

In this video, we are revisiting the big book we read yesterday, to add more to our words by creating another sentence together. The students are chosen by using their words their way data and sight word knowledge.

GED Social studies အတွက် မြေပုံတွေကို အလွယ်မှတ်နည်း၊ ချဥ်းကပ်နည်းများကို တင်ပေးထားပါတယ်။

#GED
#Social_studies
#Map
#မြေပုံ
#GEDမြေပုံကြည့်နည်း
#GED_lessons

The Common Core State Standards (CCSS) call for increasing levels of text complexity across grade levels, to ensure that students become proficient with college and career texts by their high school graduation. In the first of a two-part series, Dr. Elfrieda (Freddy) Hiebert will discuss why vocabulary is a primary means of increasing English Language Learners' capacity with complex text, in addition to discussing how instruction in particular types of vocabulary (e.g., picturable & compound words) can lay a foundation for reading many complex texts. In Dr. Hiebert's second session, she will provide lessons and guidance for teaching the vocabulary of individual texts.

Note: Participants are asked to read Text Complexity and English Learners: Building Vocabulary before the webinars.

To download the presentation slides: http://www.textproject.org/lib....rary/presentations/t

This algebra video tutorial provides a basic introduction into composite functions. it explains how to evaluate composite functions. This video contains a few examples and practice problems.

Composite Functions: https://www.youtube.com/watch?v=ZFPkQkURSxk

How To Evaluate Composite Functions:
https://www.youtube.com/watch?v=6vQxIG4lJ3w

Composite Functions - Data Table:
https://www.youtube.com/watch?v=6vQxIG4lJ3w

Comp. of 3 Functions - Data Table:
https://www.youtube.com/watch?v=Ote1KvW6BXw

Decomposing Functions:
https://www.youtube.com/watch?v=NmfaC7etZms

_____________________________________
Increasing and Decreasing Functions:
https://www.youtube.com/watch?v=Dyl7jPlJXOM

Relative Maximum & Minimum Values:
https://www.youtube.com/watch?v=GaltHJF6WyI

Domain and Range From a Graph:
https://www.youtube.com/watch?v=KirGQOwjBVI

Average Rate of Change of a Function:
https://www.youtube.com/watch?v=f_Q0qlwlclQ

The Difference Quotient of a Function:
https://www.youtube.com/watch?v=qQgVomi8lCc

_____________________________________
Evaluating Piecewise Functions:
https://www.youtube.com/watch?v=OYOXMyFKotc

Graphing Piecewise Functions:
https://www.youtube.com/watch?v=Uzw9tsGq2Pw

How To Find The Inverse of a Function:
https://www.youtube.com/watch?v=2zeYEx4eTdc

Verifying Inverse Functions:
https://www.youtube.com/watch?v=6QamgSPprjA

______________________________________
Horizontal Line Test - 1 to 1 Functions:
https://www.youtube.com/watch?v=6u9Qh1Vi_Qw

Vertical Line Test:
https://www.youtube.com/watch?v=Mxe2lX1htNk

Graphing Inverse Functions:
https://www.youtube.com/watch?v=ukEtad_aml4

Composite and Inverse Functions:
https://www.youtube.com/watch?v=GEgFmxxOJno

_______________________________________
Even and Odd Functions:
https://www.youtube.com/watch?v=fKyBOLsqRlo

Transformations of Functions:
https://www.youtube.com/watch?v=Tmdrjs9xufc

Linear Functions:
https://www.youtube.com/watch?v=BtcKotD6Ni8

Functions and Graphs - Problems:
https://www.youtube.com/watch?v=kvU9sOzT2mk

Functions - Test Review:
https://www.youtube.com/watch?v=1xATmTI-YY8

______________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/

Full-Length Videos and Worksheets:
https://www.patreon.com/MathSc....ienceTutor/collectio

12 FREE Secular Homeschool Curriculum Websites K-12.

Here is my new compilation of 10 websites that offer free curricula in mathematics, language arts, sciences, social sciences, art, music and more. Some concentrate in preschoolers or early childhood education, others run the gamut from preK through high school. I’ve come across dozens of these sites, however, my number one criteria for inclusion in this list is a secular perspective, and second, each site must be worth our while.

See entire list with links in my blog:
http://www.raisingaselfreliant....child.com/2013/10/16


♡ Follow me ♡
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4th Grade - English, Language Arts, & Reading
Texas Tech University
TTU K-12

Learn about how to use latitude and longitude to read maps!

We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you'd like us to cover any additional topics, please let us know. For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!

Get a 35% discount on our website - practice games, quizzes, and more to go along with each video: https://www.parents.miacademy.....co/coupon?code=VIDEO

"History of Russia in 100 Minutes" is a crash course for beginners. Here you will find the complete history summarized and retold in simple language with accurate dates, the most relevant names and essential concepts. After finishing the course, you will know:

- The basic characteristics of Russian history in different epochs
- The 54 most important rulers and 106 historical persons in Russian history
- 126 key dates and events in Russian history
- The basic terms and concepts of Russian history

The text is accompanied by numerous online resources:
- 20,000 pictures
- 700 videos
- 3,500 songs
- 100 podcast episodes

All that is available via the smarthistories.com website.


http://smarthistories.com/


Narrated by: Sammi Bold
Written by: Tanel Vahisalu
Edited by: Madis Maasing and Kerry Kubilius
Proofread by: Tony Burnett
Graphic Art by: Mehak Zaib Suddle

Video:
“Rise of Catherine the Great” by Paul Czinner, Alexander Korda (1934)

Music:
"Tchaikovsky (Part II)" and "Crocodile Ghena's Song" (1995) by J.M.K.E.
https://www.discogs.com/JMKE-Sputniks...

- - - - - - - - - -

CATHERINE THE GREAT

The reign of Catherine II (Catherine the Great) is known to history as the “Age of Enlightened Absolutism,” in Russia. A whole generation of people grew up enjoying freedom of speech, political stability, and great victories.

BACKGROUND
After the death of Elizabeth, her nephew, Peter III, from Northern Germany ruled disastrously. His wife, Sophie Friederike Auguste, was a pretty German princess who had been invited to Russia while still very young. She converted to Orthodoxy, learned the Russian language, and took the name Catherine. In 1762, she launched a coup against her husband and became the Empress of Russia, known as Catherine the Great.

ENLIGHTENED MONARCH
Catherine continued Peter the Great’s line of modernization, and she strongly supported education and culture. She prepared drafted laws based on the views of the Enlightenment, but the greater part of her ambitious plans, including the abolition of serfdom, led nowhere.

PATRON OF NOBILITY
The great Administration Reform of 1775 increased the administrative power of the nobility. Courts and police institutions were established. The reform significantly increased the effectiveness of local government in Russia.

FOREIGN POLICY
In the beginning, Catherine’s foreign policy was in the hands of Nikita Panin. The commanders Alexander Suvorov, Fyodor Ushakov, and Grigory Potemkin, greatly expanded Russia’s territory in the south and west. In 1784, Crimea was taken from the Ottomans, and the three partitions, formed in 1772, 1793 and 1795, respectively, completely wiped Poland off the map.

PUGACHEV'S REBELLION
Catherine supported the Enlightenment only to a certain extent. She denounced the French Revolution as a brutal act against monarchy.

Although Catherine tried to improve the situation of Russian peasants, these attempts were mostly futile and caused unrest. In 1773, the greatest armed revolt in Russia, constituting 100,000 Cossacks, led by Yemelyan Pugachev, who claimed that he was actually Peter III, was put down ruthlessly. Pugachev was publicly executed.

The world is full of strange and beautiful natural phenomena - glowing skies, mysterious lights, fireballs from rivers, and clouds that defy explanation. These videos explore the rarest and weirdest things nature creates, from ball lightning and red auroras to endless rains and vanishing shadows. Discover how science tries to explain them and where mystery still wins. Perfect for anyone who loves nature, science, and the unexplained.
Animation is created by Bright Side.
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Check our Bright Side podcast on Spotify and leave a positive review! https://open.spotify.com/show/....0hUkPxD34jRLrMrJux4V
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This physics video tutorial explains how to solve any resistors in series and parallel combination circuit problems. The first thing you need to do is calculate the equivalent resistance of the circuit which you can use to calculate the current flowing from the battery based on ohm's law. Using the current and the voltage drops across each resistor, you can calculate the electric potential at every point in the circuit which will allow you to calculate the current flowing through any resistor. This technique is useful if there's not multiple batteries in different loops of the equation. Keep in mind, the current flowing in two resistors that are in series with each other is the same. The voltage is the same across resistors connected in parallel. This video contains plenty of examples and practice problems including a current division formula for resistors connected in parallel.

Schematic Diagrams & Symbols:
https://www.youtube.com/watch?v=Dl1gFBNa0Ik

Resistors In Series:
https://www.youtube.com/watch?v=9z53qVQjasU

Resistors In Parallel:
https://www.youtube.com/watch?v=SYrOiQs3X2U

Series and Parallel Circuits - Light Bulb Brightness:
https://www.youtube.com/watch?v=NjgxXcBfIII

Equivalent Resistance of Complex Circuits:
https://www.youtube.com/watch?v=kjW4H3fKi8o

_________________________
Voltage Divider Circuit:
https://www.youtube.com/watch?v=JGXdi7XcQi8

Current Dividers:
https://www.youtube.com/watch?v=PpfOH_uBKCw

Parallel Circuit Challenge Problem:
https://www.youtube.com/watch?v=y-gwr8LCHKo

Kirchhoff's Current Law:
https://www.youtube.com/watch?v=Q39xQUlTGew

Kirchhoff's Voltage Law:
https://www.youtube.com/watch?v=6F_rmZ1nXFQ

DC Circuits Review:
https://www.youtube.com/watch?v=wejz5s31Cts

____________________________
KCL and KVL Circuit Analysis:
https://www.youtube.com/watch?v=2Zu3ppq3n8I

Thevenin's Theorem - Circuit Analysis:
https://www.youtube.com/watch?v=zTDgziJC-q8

Norton's Theorem - Circuit Analysis:
https://www.youtube.com/watch?v=-kkvqr1wSwA

Superposition Theorem:
https://www.youtube.com/watch?v=EX52BuZxpQM

Maximum Power Transfer:
https://www.youtube.com/watch?v=8CA6ZNXgI-Y

Physics PDF Worksheets:
https://www.video-tutor.net/ph....ysics-basic-introduc

Polynomial division (long division/ algebraic division) is similar to the long division process for two numbers. A small review of the long division format occurs at the beginning followed by two examples (one where the remainder is zero and another where the remainder is non-zero).

These examples were selected to motivate the connection between factoring polynomials of degree greater than two to the polynomial division process.

0:00 Introductory review
0:53 Example 1 starts
5:59 Example 2 starts
9:22 Small takeaway

#Polynomial #LongDivision #PolynomialDivision
#JoeCMath

The process of completing the square for a quadratic expression, equation or, function can be hard to complete. Depending on the instructions you may have to also graph the function once it is in vertex form, or find the x-intercepts using vertex form.

This video goes through three examples with various levels of difficulty.

#CompletingTheSquare
#CompleteTheSquare
#StandardtoVertexForm
#Algebra
#JoeCMathExamples

0:00 Introduction
0:15 Refresher on process. General beside example.
1:14 Easy example.
2:34 Medium example.
4:25 Hard example.
7:21 A subscription to Joe implies absolutely nothing.

🎓 Level Up Your Teaching with a FREE Gemini Certification! 🚀

Ready to upgrade your teaching skills using the power of AI? This video will guide you through how to get your FREE Gemini Certification and show you how it can transform the way you teach, plan lessons, and engage students.
✨ What you’ll learn in this video:
What the Gemini Certification is all about
How teachers can use Gemini AI in the classroom
tips to get certified for FREE
Real benefits for educators, trainers, and content creators
Whether you’re a teacher, tutor, or educator looking to stay ahead in the digital age, this certification is a must-have. Don’t miss this opportunity to level up your teaching and enhance your professional credentials—at no cost!
👉 Watch until the end and start your Gemini Certification journey today!

Disclaimer: This post may include affiliate links and I may earn a small commission for every successful order, at no extra cost to you. No clickbait / no harmful software in the link provided.

#GeminiCertifiedEducator
#GoogleGemini
#FreeCertification
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Where are all the aliens? The universe is too big and too old, why have we not met aliens yet? Do they live in computers? Were they wiped out by an ancient super intelligence? Or are we just to primitive to understand their motives? Whatever the answer is, it is incredibly important for our own future.

First Fermi Video:
http://www.youtube.com/watch?v=sNhhvQGsMEc

What is life:
https://www.youtube.com/watch?v=QOCaacO8wus


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Fermi Paradox II – Solutions and Ideas

Help us caption & translate this video!

http://www.youtube.com/timedtext_cs_panel?c=UCsXVk37bltHxD1rDPwtNM8Q&tab=2

Reading tutorial | Reading Lesson | Teacher Aya Online Tutor.
Enjoy watching!

#synonyms
#samemeaning
#lessonforgrade1
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#besttutor
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#leessonwithquiz

Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/algebra2/polynomial_and_rational/binomial_theorem/e/binomial-theorem?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII

Watch the next lesson: https://www.khanacademy.org/math/algebra2/polynomial_and_rational/binomial_theorem/v/pascals-triangle-binomial-theorem?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII

Missed the previous lesson?
https://www.khanacademy.org/math/algebra2/polynomial_and_rational/polynomial-end-behavior/v/polynomial-end-behavior-exercise-example?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII

Algebra II on Khan Academy: Your studies in algebra 1 have built a solid foundation from which you can explore linear equations, inequalities, and functions. In algebra 2 we build upon that foundation and not only extend our knowledge of algebra 1, but slowly become capable of tackling the BIG questions of the universe. We'll again touch on systems of equations, inequalities, and functions...but we'll also address exponential and logarithmic functions, logarithms, imaginary and complex numbers, conic sections, and matrices. Don't let these big words intimidate you. We're on this journey with you!

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.

For free. For everyone. Forever. #YouCanLearnAnything

Subscribe to Khan Academy’s Algebra II channel:
https://www.youtube.com/channe....l/UCsCA3_VozRtgUT7wW
Subscribe to Khan Academy: https://www.youtube.com/subscr....iption_center?add_us

"Determining oxidation numbers in magnesium oxide and magnesium hydroxide.

Watch the next lesson: https://www.khanacademy.org/science/chemistry/oxidation-reduction/redox-oxidation-reduction/v/unusual-oxygen-oxidation-states?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry

Missed the previous lesson? https://www.khanacademy.org/science/chemistry/oxidation-reduction/redox-oxidation-reduction/v/oxidation-state-trends-in-periodic-table?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry

Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful.

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.

For free. For everyone. Forever. #YouCanLearnAnything

Subscribe to Khan Academy’s Chemistry channel: https://www.youtube.com/channe....l/UCyEot66LrwWFEMONv
Subscribe to Khan Academy: https://www.youtube.com/subscr....iption_center?add_us

Learn about the US Constitution for a better score on GED social studies!

Bald eagle image from thumbnail attribution:
:Andy Morffew [CC BY 2.0 (https://creativecommons.org/licenses/by/2.0)].
https://upload.wikimedia.org/w....ikipedia/commons/1/1
-Removed background around the eagle in photo.

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🖍️ Enjoy a fun and hilarious sing-along song all about colors made just for kids! 🦁 Lucas, Ruby, and their adorable friends join in to explain everything children need to know about colors in a catchy nursery rhyme form. 🎨 Before you know it, your little ones will know all about colors, animals, and more!

In this song kids will learn colors using examples from nature, including animals, birds, fish, and insects. 🍭 Each one shows a fun representation of the color to make it easy for kids to make the mental connection—red apples and ladybugs, yellow ducks and bees, etc. 🌈 It’s a great way to make the colors pop to life, and it will also teach kids, toddlers, and even babies names of common animals! 🤩

🖌️ Get ready to dance, play, sing and learn with this colors song for children. Presented by Lucas & Friends in ultra HD 4k for the best in audio-visual quality! ✔️

00:00 Lucas & Friends Intro
0:12 ❤️ Red - The ladybug and the crab are red.
1:35 📙 Orange - The fish and the giraffe are orange.
1:51 🟡 Yellow - The duck and the bee are yellow.
4:07 🍏 Green - The parrot and the frog are green.
5:21 🔷 Blue - The butterfly and the dolphin are blue.
6:39 🟪 Purple - The octopus and the umbrella are purple.
7:56 🌸 Pink - The pig and the flamingo are pink.
9:11 🟤 Brown - The kangaroo and the monkey are brown.
10:26 🐀 Gray - The mouse and the elephant are gray.
11:45 ⚫ Black - The sheep and the spider are black.
12:59 🤍 White - The snowman and the rabbit are white.

⭐ If our video entertains your child and makes them happy, please hit the LIKE button. SHARE it with your friends and family members so that more and more kids can sing and have fun. 👍 SUBSCRIBE to our channel to watch our other nursery rhymes, kids songs, and educational videos for children and parents. 🔔 And make sure you turn on the bell icon to get notified as soon as our new videos come up. 🔥

🛍️ Official Lucas & Friends Store Now Open - https://shop.rvappstudios.com

📢 Checkout Lucas & Friends Educational Children's Books: https://www.amazon.com/Lucas-F....riends-by-RV-AppStud

🎯 Try our FREE Educational Apps for Babies & Toddlers:
🟡 Google Play: https://play.google.com/store/....apps/dev?id=74300059
🟣 iOS: https://apps.apple.com/develop....er/rv-appstudios-llc
🟢 RV AppStudios: https://www.rvappstudios.com/kidsapp.html

🌟 More fun nursery rhymes and kids songs by RV AppStudios:

✏️ Learn Colors With Lucas and Ruby - https://youtu.be/qMkXnwRlpRo
🔅 Colors For Kids Song - https://youtu.be/Mc5S5P_yQ0A
🎵 Color Song for Kids - https://youtu.be/PoMPLwKgeKw
🟨 Learn Shapes for Kids - https://youtu.be/SOBCQ7pJjiA

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✨ Welcome to today’s LIVE Math Class! ✨
In this session, we’ll dive into the Introduction to Fractions – the basics you need to understand before mastering more advanced math concepts.

📌 What you’ll learn today:

What are fractions?

Numerator & Denominator explained

Types of fractions (proper, improper, mixed)

Real-life examples for easy understanding

🎯 Perfect for students of all levels (Class 5–8) who want to build a strong foundation in fractions.

👉 Stay till the end for practice questions & tips to score high in exams!

🔔 Don’t forget to LIKE, SHARE & SUBSCRIBE for more live math classes.
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Practice App:
To get FREE study material, download our ME AND MATH PRACTICE APP:
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www.practice.meandmath.com